The Roman numeral CDLXXVIII corresponds to the Arabic number 478.
CDLXXVIII = 478
Symbols are written and read from left to right, from highest to lowest.
If number CDLXXVIII is within to text or sentence it should be read in its equivalent in Arabic numbers, in this case 478.
CDLXXVII is number 477
CDLXXIX is number 479
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